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6bf342e1 | 1 | /* $Cambridge: exim/src/src/pcre/dftables.c,v 1.5 2007/01/23 15:08:45 ph10 Exp $ */ |
8ac170f3 | 2 | |
c86f6258 PH |
3 | /************************************************* |
4 | * Perl-Compatible Regular Expressions * | |
5 | *************************************************/ | |
6 | ||
8ac170f3 | 7 | /* PCRE is a library of functions to support regular expressions whose syntax |
c86f6258 PH |
8 | and semantics are as close as possible to those of the Perl 5 language. |
9 | ||
8ac170f3 | 10 | Written by Philip Hazel |
aa41d2de | 11 | Copyright (c) 1997-2006 University of Cambridge |
c86f6258 PH |
12 | |
13 | ----------------------------------------------------------------------------- | |
14 | Redistribution and use in source and binary forms, with or without | |
15 | modification, are permitted provided that the following conditions are met: | |
16 | ||
17 | * Redistributions of source code must retain the above copyright notice, | |
18 | this list of conditions and the following disclaimer. | |
19 | ||
20 | * Redistributions in binary form must reproduce the above copyright | |
21 | notice, this list of conditions and the following disclaimer in the | |
22 | documentation and/or other materials provided with the distribution. | |
23 | ||
24 | * Neither the name of the University of Cambridge nor the names of its | |
25 | contributors may be used to endorse or promote products derived from | |
26 | this software without specific prior written permission. | |
27 | ||
28 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
29 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
30 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
31 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
32 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
33 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
34 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
35 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
36 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
37 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
38 | POSSIBILITY OF SUCH DAMAGE. | |
39 | ----------------------------------------------------------------------------- | |
40 | */ | |
41 | ||
42 | ||
8ac170f3 PH |
43 | /* This is a freestanding support program to generate a file containing default |
44 | character tables for PCRE. The tables are built according to the default C | |
45 | locale. Now that pcre_maketables is a function visible to the outside world, we | |
46 | make use of its code from here in order to be consistent. */ | |
c86f6258 PH |
47 | |
48 | #include <ctype.h> | |
49 | #include <stdio.h> | |
50 | #include <string.h> | |
51 | ||
8ac170f3 | 52 | #include "pcre_internal.h" |
c86f6258 | 53 | |
8ac170f3 PH |
54 | #define DFTABLES /* pcre_maketables.c notices this */ |
55 | #include "pcre_maketables.c" | |
c86f6258 PH |
56 | |
57 | ||
58 | int main(int argc, char **argv) | |
59 | { | |
60 | int i; | |
61 | FILE *f; | |
62 | const unsigned char *tables = pcre_maketables(); | |
8ac170f3 | 63 | const unsigned char *base_of_tables = tables; |
c86f6258 PH |
64 | |
65 | if (argc != 2) | |
66 | { | |
67 | fprintf(stderr, "dftables: one filename argument is required\n"); | |
68 | return 1; | |
69 | } | |
70 | ||
92e772ff | 71 | f = fopen(argv[1], "wb"); |
c86f6258 PH |
72 | if (f == NULL) |
73 | { | |
74 | fprintf(stderr, "dftables: failed to open %s for writing\n", argv[1]); | |
75 | return 1; | |
76 | } | |
77 | ||
78 | /* There are two fprintf() calls here, because gcc in pedantic mode complains | |
79 | about the very long string otherwise. */ | |
80 | ||
81 | fprintf(f, | |
82 | "/*************************************************\n" | |
83 | "* Perl-Compatible Regular Expressions *\n" | |
84 | "*************************************************/\n\n" | |
85 | "/* This file is automatically written by the dftables auxiliary \n" | |
86 | "program. If you edit it by hand, you might like to edit the Makefile to \n" | |
87 | "prevent its ever being regenerated.\n\n"); | |
88 | fprintf(f, | |
8ac170f3 PH |
89 | "This file contains the default tables for characters with codes less than\n" |
90 | "128 (ASCII characters). These tables are used when no external tables are\n" | |
6bf342e1 PH |
91 | "passed to PCRE.\n\n"); |
92 | fprintf(f, | |
93 | "The following #include is present because without it gcc 4.x may remove\n" | |
94 | "the array definition from the final binary if PCRE is built into a static\n" | |
95 | "library and dead code stripping is activated. This leads to link errors.\n" | |
96 | "Pulling in the header ensures that the array gets flagged as \"someone\n" | |
97 | "outside this compilation unit might reference this\" and so it will always\n" | |
98 | "be supplied to the linker. */\n\n" | |
99 | "#include \"pcre_internal.h\"\n\n"); | |
100 | fprintf(f, | |
8ac170f3 | 101 | "const unsigned char _pcre_default_tables[] = {\n\n" |
c86f6258 PH |
102 | "/* This table is a lower casing table. */\n\n"); |
103 | ||
104 | fprintf(f, " "); | |
105 | for (i = 0; i < 256; i++) | |
106 | { | |
107 | if ((i & 7) == 0 && i != 0) fprintf(f, "\n "); | |
108 | fprintf(f, "%3d", *tables++); | |
109 | if (i != 255) fprintf(f, ","); | |
110 | } | |
111 | fprintf(f, ",\n\n"); | |
112 | ||
113 | fprintf(f, "/* This table is a case flipping table. */\n\n"); | |
114 | ||
115 | fprintf(f, " "); | |
116 | for (i = 0; i < 256; i++) | |
117 | { | |
118 | if ((i & 7) == 0 && i != 0) fprintf(f, "\n "); | |
119 | fprintf(f, "%3d", *tables++); | |
120 | if (i != 255) fprintf(f, ","); | |
121 | } | |
122 | fprintf(f, ",\n\n"); | |
123 | ||
124 | fprintf(f, | |
125 | "/* This table contains bit maps for various character classes.\n" | |
126 | "Each map is 32 bytes long and the bits run from the least\n" | |
127 | "significant end of each byte. The classes that have their own\n" | |
128 | "maps are: space, xdigit, digit, upper, lower, word, graph\n" | |
129 | "print, punct, and cntrl. Other classes are built from combinations. */\n\n"); | |
130 | ||
131 | fprintf(f, " "); | |
132 | for (i = 0; i < cbit_length; i++) | |
133 | { | |
134 | if ((i & 7) == 0 && i != 0) | |
135 | { | |
136 | if ((i & 31) == 0) fprintf(f, "\n"); | |
137 | fprintf(f, "\n "); | |
138 | } | |
139 | fprintf(f, "0x%02x", *tables++); | |
140 | if (i != cbit_length - 1) fprintf(f, ","); | |
141 | } | |
142 | fprintf(f, ",\n\n"); | |
143 | ||
144 | fprintf(f, | |
145 | "/* This table identifies various classes of character by individual bits:\n" | |
146 | " 0x%02x white space character\n" | |
147 | " 0x%02x letter\n" | |
148 | " 0x%02x decimal digit\n" | |
149 | " 0x%02x hexadecimal digit\n" | |
150 | " 0x%02x alphanumeric or '_'\n" | |
151 | " 0x%02x regular expression metacharacter or binary zero\n*/\n\n", | |
152 | ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word, | |
153 | ctype_meta); | |
154 | ||
155 | fprintf(f, " "); | |
156 | for (i = 0; i < 256; i++) | |
157 | { | |
158 | if ((i & 7) == 0 && i != 0) | |
159 | { | |
160 | fprintf(f, " /* "); | |
161 | if (isprint(i-8)) fprintf(f, " %c -", i-8); | |
162 | else fprintf(f, "%3d-", i-8); | |
163 | if (isprint(i-1)) fprintf(f, " %c ", i-1); | |
164 | else fprintf(f, "%3d", i-1); | |
165 | fprintf(f, " */\n "); | |
166 | } | |
167 | fprintf(f, "0x%02x", *tables++); | |
168 | if (i != 255) fprintf(f, ","); | |
169 | } | |
170 | ||
171 | fprintf(f, "};/* "); | |
172 | if (isprint(i-8)) fprintf(f, " %c -", i-8); | |
173 | else fprintf(f, "%3d-", i-8); | |
174 | if (isprint(i-1)) fprintf(f, " %c ", i-1); | |
175 | else fprintf(f, "%3d", i-1); | |
176 | fprintf(f, " */\n\n/* End of chartables.c */\n"); | |
177 | ||
178 | fclose(f); | |
8ac170f3 | 179 | free((void *)base_of_tables); |
c86f6258 PH |
180 | return 0; |
181 | } | |
182 | ||
183 | /* End of dftables.c */ |